Power-driven plow.



PATENTBD APR. 14, 1908.

A. W. HARPSTRITH I POWER DRIVEN 'PLOW.

2 SHEETS-SHEET 1.

5 R m a APPLICATION IILED OUT. 17, 1906.

: Ill/I Q Q 4 I 8M ATTORNEY WITNESS? No. 884.490. PATENTED APR. 14, 1908.

- A. W. HARPSTRITE.

POWER DRIVEN PLOW. APPLICATION FILED OUT. 17, 1906.

,2 SHEETS-P8113111 2.

A TTOHNE) ANDREWYV. HARPSTRITE, OF MOWEAQUA, ILLINOIS.

. rowEn-nnivEN PLOW."

Application filed October 17,1906. Serial No. 389,368

To all whom-ittmoy concemn v i Be it known that 1, ANDREW W. HARP- STRITE; a citizen of the United 'States reSid- -companymg' drawings.

ing at Mowea ua, in the county of Shelby. and State of I linois, new and useful Improveme ts in Power- Driven Plows, of which the following is :a. specification, reference being had to the ac- My invention relates to improvements in plows and particularly to power-propelled plows. Y

One object of my invention is to provide such'a plow with a simple and hi hly, efficient mechanism for propelling the p ow.

'Another object of my invention is to provide the. low with asteering'mechanism which wil operations of the river. s v I A further object of my invention is to pro 'vide theplow with novel mechanism for adiusting the wheels so' as to maintain the plow evel whatever may be the inclination of the terrain. y A fourth object of'rnyinvention is to provide the plow withnovel means-for raising and lowering the colters and plowshares.

In the drawings illustrating the principle of. my invention and the best inode 'now known to me of' applying that principle, Figure 1 is a side elevation of mynew plow Fig. 2 is a-plan view of the same, the engine being .shown in dotted lines; and Figs. "3, 4;, 5 and 6 aredetails hereinafter referred to.-

The mechanism for propelling the plow comprises an engine a of any suitable type (a gas engine is preferred, because of its compact nature, its adaptability to use where units of small ower are needed and its small cost of attenance and 11 keep) which is mounted uponthe frame b of the plow' and upon the main shaft of which is fast a pulley d belt-connected to the pulley e loose upon' the transverse shaft (Fig. 2)- upon' which are also mounte'd the pinion g, t'he fly-wheel, h and'the slidable'e'lutch' 'i, the-latter being keyed to the shaft a Parallel with the latter shaft is the shaft- 7" 11 'on which are mounted the sprockets k an the spur-gear m, the latter beingin mesh with and hence a driven by thei-pinlon g. In the rear of the main fram'eb is mounted a shaft n which is driven bythe sprockets 0 connected b the drivs-chainsip-with the s rockets 7c,

the shaft .nis mounted t e traetionf'or pro Specification ofLetters Patent.

have invented certain be readily controlled and which 'gesponds quickly to the 20= .shar.e 26, while upon shaft 20 are mountedtwo crank-arms 27, 28 I pon Patented April 14, 1908. j

6 1n detail and is formed with a ferential groove 1* within which engages the justed position by the engagement of the latch device twith the toothed segment u.

The plowman sits in the s'eat o and steers the low by means ,of' the hand-wheel or steering-wheelw-mounted u on the rod or stem at at the'rear end thereo the front end (Fig. 2) being journaled at y in'the frame '6 and provided witha grooved collar or hub z from which rojeot the pins or studs 2 which engage-the inks of the steering chain 3 the ends of which are connected to the rearerid of the bars 4 by rods 5; bars 4 are connected by the rods 6 the inner The bars A are secured to the brackets '8- front part of t 1e mainframe b, (FM/2); and

end ofwhich engages a block 14 from the front face ofwhich projects one ofthe axles 10 and which is free to'slide and carry the axle or spindle, 10. u or do'wn,. when the erank12 is turned. T e screw 13 is formed to rotate in the top-plate 16.

To raise. and lower the colters and the- East to the shaft is secured an operating lever 21 rovided with a latch device 22 the lower en of which is adapted and designed to engage the toothed se ment 23'to lock the lever 21 in its adjuste position. On the inner end of the shaft 20' is mounted a toothed wheel 24in mesh with the rack 25 on the lower end of which ismounted the plowthe outer end of the the first of which is connected by a link 29 with a crank-arm 30 fast upon the stub-shaft 31'which carries a ear 32-that meshes with a rack33'u on the ower end of which is the other plows "are34.- The secondcrank-arm 28 is connected with link 36; and the bell-crank isfast upona shaft-37 which carries at its inner end the crankrarm-44connected by the link45 with a bell-crank 38', the bell-cranks 35, 38 being entirelysimilar and shown in Fig. 3. is

lower end of'a clutch-lever 5 held in its ad--.

The front ends of the which support the axles 10 ,upon w ich turn near its upperend with a collar 15 and is free a bell-crank 35 by, the

ends-of which are joined by a-turnbu'ckle 7.

which are hinged at 9 (Figs. 4 and 5)- to theplows'the following mechanism is provided:

, plowshare.

therein shown, the outer end of each of the I naled and held against vertical movement in bell-cranks is slottedand in the slot engages a stud 39 which projects from the oolter-carrying shaft 40 the lower end of which is formed with the forks 41 in which is rotatably mounted the colter 42. From the foreoing description and an inspection'of the drawings, it willvbe evident that by swinging the lever 21, the colters and the may be raised and lowered. r

The traction or propeller wheel g travels directly in rear of the lowshare 26., and, therefore,in the furrow Fast turned by that The plow will turn the soil. to either the right or to the left by the use of pro erly formed plowshares.

4 at I claim is z y 4 The combination in a plow, ot a frame, soil-turning devices carried thereby, blocks plowshares pivoted to the frame and arranged to swing orizontally, vertically-disposed screws oursaid blocks and equipped with handles fixed to the screws, axle members slidable verti-j cally on said blocks and having portions engaging the said screws, Wheels carried by the said axle members, bars fixed to and extending fore and. aft from the blocks, a rigid connection intermediate the forward portions of the said bars, a steering shaft mounted in the frame at a point between the said bars, and connectionsinterniediate'the rear portions of the bars and the steeri-ngshaft.

In testimony whereof I have hereunto set my hand at said Moweaqua in the resence of two witnesses this 3rd ANDREW W. HARPSTRITE Witnesses: 3'

BEN F. HUDSON, S. J. BURKITT.

as day of ctober, 

